Mathematics Specialist (Fluent in Portuguese - Brazil) – AI Trainer
Required Skills
Job Description
We are seeking a Mathematics Specialist fluent in Brazilian Portuguese to join our AI Training team. In this role, you will combine mathematics expertise with language proficiency to help train, evaluate, and improve advanced AI models. You will review AI outputs, create and verify math problems, and ensure accuracy and cultural relevance in both Portuguese and English.
Responsibilities
-
Review, annotate, and evaluate AI-generated responses in mathematics, including algebra, calculus, statistics, and applied math.
-
Create, verify, and refine math problems, solutions, and explanations in both Portuguese and English.
-
Localize and adapt mathematical explanations to Brazilian Portuguese, ensuring precise terminology and notation.
-
Provide constructive feedback to improve AI reasoning, clarity, and accuracy.
-
Develop benchmark datasets and testing materials to measure AI performance.
-
Collaborate with AI researchers, linguists, and subject-matter experts to enhance training methods.
-
Ensure academic accuracy, linguistic quality, and cultural appropriateness of all content.
Requirements
-
Bachelor’s degree or higher in Mathematics, Applied Mathematics, Statistics, Engineering, or a related quantitative field.
-
Strong problem-solving ability across core mathematical domains.
-
Native or near-native fluency in Brazilian Portuguese and professional proficiency in English.
-
Ability to explain complex mathematical concepts clearly and accessibly.
-
Excellent attention to detail and critical thinking skills.
-
Comfortable using digital tools for annotation, evaluation, or content creation.
-
Experience in teaching, tutoring, curriculum development, or AI/ML data annotation is a plus.
What We Offer
-
Opportunity to contribute to cutting-edge AI development.
-
Remote, flexible work environment.
-
Competitive compensation based on experience and expertise.
-
Collaborative team of mathematicians, linguists, and AI specialists.
Apply for This Role
Ready to contribute your expertise to this project?
You'll be guided through our expert onboarding process
Details
Similar Opportunities
Financial Analysis Expert
We are hiring experienced finance professionals with deep experience analyzing public company filings and financial disclosures.2+ years in investment banking, equity research, or buy-side/sell-side analysis (analyst or associate level)Strong familiarity with 10-Ks, 10-Qs, S-4s, earnings releases, and related filingsHands-on experience with valuation and modeling, including DCFs, LBOs, trading comps, precedent transactions, accretion/dilution, and EV-based valuation frameworksStrong understanding of accounting conventions and GAAP-to-non-GAAP adjustmentsExceptional attention to detail and comfort supporting conclusions with clear evidence and sourcingAreas you'll work acrossComparable company and precedent transaction analysisEarnings analysis, including actuals vs. guidance/consensus and non-GAAP adjustmentsDisclosure and segment reporting analysis across multiple filingsFinancial statement and accounting analysisDCF, LBO, and accretion/dilution modelingBroader quantitative and qualitative analysis of public company disclosuresWhat you'll be creatingYou'll help develop finance-focused analytical content and exercises that:Have a clear, well-supported answerRequire synthesizing information across multiple filings or sourcesReflect real-world financial analysis and industry conventionsIncorporate details from disclosures, footnotes, MD&A, and accounting policiesReward careful reading, financial reasoning, and attention to detailNice to haveSector specialization (financials, energy, industrials, healthcare, technology, etc.)Experience creating training materials, assessments, or analytical contentPrior data annotation, quality review, or research experienceCFA, CPA, MBA, or other relevant credentials
Dutch Language AI Training Specialist
About the Role We’re looking for contract, remote Dutch-speaking annotators to evaluate AI-generated content with a sharp eye for detail and cultural nuance. You’ll assess whether outputs are coherent, consistent, and aligned with real-world expectations in Dutch. What You’ll Do • Review AI-generated content in Dutch • Identify message drift (detect output deviation) • Detect hallucinations (fabricated claims, unrealistic visuals, incorrect attributes) • Provide structured feedback that improves model performance over time What We’re Looking For • Native or fluent Dutch speaker • Strong understanding of Dutch language and cultural context • Ability to distinguish subtle differences in tone, quality, and correctness • High attention to detail and consistency in applying guidelines • Bonus: experience in marketing and data annotation • Availability: short-term engagement starting ASAP Nederlands AI Trainingsspecialist (Taalbeoordelaar) Over de functie Wij zijn op zoek naar Nederlandstalige freelance beoordelaars die AI-gegenereerde content kunnen evalueren met oog voor detail en gevoel voor culturele nuances. Je beoordeelt of teksten logisch, consistent en passend zijn binnen de Nederlandse taal en context. Wat je gaat doen • AI-gegenereerde content in het Nederlands beoordelen • Afwijkingen in boodschap of inhoud signaleren • Hallucinaties identificeren (verzonnen feiten, onrealistische beelden of onjuiste kenmerken) • Gestructureerde feedback geven om AI-modellen te helpen verbeteren Wat we zoeken • Nederlands als moedertaal of uitstekende beheersing van het Nederlands • Sterk begrip van de Nederlandse taal en culturele context • Vermogen om subtiele verschillen in toon, kwaliteit en correctheid te herkennen • Grote nauwkeurigheid en consistente toepassing van richtlijnen • Pré: ervaring met marketing of data-annotatie • Beschikbaarheid voor een kortlopend project met start op korte termijn
Swedish Language Evaluator
About the Role We’re looking for contract, remote Swedish-speaking annotators to evaluate AI-generated content with a sharp eye for detail and cultural nuance. You’ll assess whether outputs are coherent, consistent, and aligned with real-world expectations in Swedish. What You’ll Do • Review AI-generated content in Swedish • Identify message drift (detect output deviation) • Detect hallucinations (fabricated claims, unrealistic visuals, incorrect attributes) • Provide structured feedback that improves model performance over time What We’re Looking For • Native or fluent Swedish speaker • Strong understanding of Swedish language and cultural context • Ability to distinguish subtle differences in tone, quality, and correctness • High attention to detail and consistency in applying guidelines • Bonus: experience in marketing and data annotation • Availability: short-term engagement starting ASAP Svensk Språkutvärderare Om rollen Vi söker svensktalande frilansutvärderare på distans som kan granska AI-genererat innehåll med ett skarpt öga för detaljer och kulturella nyanser. Du kommer att bedöma om innehållet är sammanhängande, konsekvent och i linje med verkliga förväntningar på svenska. Arbetsuppgifter • Granska AI-genererat innehåll på svenska • Identifiera avvikelser i budskap och innehåll • Upptäcka hallucinationer (påhittade fakta, orealistiska bilder eller felaktiga attribut) • Ge strukturerad feedback som hjälper till att förbättra modellens prestanda över tid Kvalifikationer • Svenska som modersmål eller mycket goda kunskaper i svenska • God förståelse för det svenska språket och den kulturella kontexten • Förmåga att urskilja subtila skillnader i ton, kvalitet och korrekthet • Hög noggrannhet och förmåga att konsekvent följa riktlinjer • Meriterande: erfarenhet av marknadsföring eller dataannotering • Tillgänglighet: kortare uppdrag med start omgående
Turkish Language Evaluator
About the Role We’re looking for contract, remote Turkish-speaking annotators to evaluate AI-generated content with a sharp eye for detail and cultural nuance. You’ll evaluate whether outputs are coherent, consistent, and aligned with real-world expectations in Turkish. What You’ll Do • Review AI-generated content in Turkish • Identify message drift (detect output deviation) • Detect hallucinations (fabricated claims, unrealistic visuals, incorrect attributes) • Provide structured feedback that improves model performance over time What We’re Looking For • Native or fluent Turkish speaker • Strong understanding of Turkish language and cultural context • Ability to distinguish subtle differences in tone, quality, and correctness • High attention to detail and consistency in applying guidelines • Bonus: experience in marketing and data annotations • Availability: short-term engagement starting ASAPTürkçe Dil DeğerlendiricisiRol Hakkında Yapay zeka tarafından üretilen içerikleri değerlendirmek üzere, detaylara dikkat eden ve kültürel nüansları anlayabilen Türkçe konuşan freelance değerlendiriciler arıyoruz. Çıktıların mantıklı, tutarlı ve gerçek dünya beklentilerine uygun olup olmadığını değerlendireceksiniz.Sorumluluklar • Türkçe AI içeriklerini incelemek • Mesaj sapmalarını tespit etmek • Halüsinasyonları belirlemek (uydurma bilgiler, gerçek dışı görseller, hatalı özellikler) • Model performansını geliştirmek için yapılandırılmış geri bildirim sağlamak Aranan Nitelikler • Türkçe ana dil veya ileri düzey akıcılık • Dil ve kültürel bağlam konusunda güçlü anlayış • Ton, kalite ve doğruluk farklarını ayırt edebilme • Detaylara dikkat ve yönergeleri tutarlı uygulama • Artı: pazarlama veya veri anotasyonu deneyimi • Uygunluk: kısa süreli proje, hemen başlangıç
Italian Language Evaluator
About the Role We’re looking for contract, remote Italian-speaking annotators to evaluate AI-generated content with a sharp eye for detail and cultural nuance. You’ll assess whether outputs make sense, are consistent, and reflect real-world expectations in Italian. What You’ll Do • Review AI-generated content in Italian • Identify message drift (detect output deviation) • Detect hallucinations (fabricated claims, unrealistic visuals, incorrect attributes) • Provide structured feedback that improves model performance over time What We’re Looking For • Native or fluent Italian speaker • Strong understanding of Italian language and cultural context • Ability to distinguish subtle differences in tone, quality, and correctness • High attention to detail and consistency in applying guidelines • Bonus: experience in marketing and data annotations • Availability: short-term engagement starting ASAPValutatore/trice lingua italianaDescrizione del ruolo Cerchiamo annotatori freelance madrelingua o fluenti in italiano per valutare contenuti generati dall’IA, con grande attenzione ai dettagli e alle sfumature culturali. Dovrai stabilire se gli output sono coerenti, sensati e realistici.Responsabilità • Revisionare contenuti generati dall’IA in italiano • Identificare deviazioni nel messaggio • Rilevare allucinazioni (informazioni inventate, elementi irrealistici, attributi errati) • Fornire feedback strutturato per migliorare le performance del modello Requisiti • Madrelingua o fluente in italiano • Ottima comprensione linguistica e culturale • Capacità di cogliere differenze sottili di tono, qualità e correttezza • Elevata attenzione ai dettagli e coerenza nell’applicazione delle linee guida • Plus: esperienza in marketing o data annotation • Disponibilità: incarico a breve termine, inizio immediato
German Language Evaluator
About the Role We’re looking for contract, remote German-speaking annotators to evaluate AI-generated content with a sharp eye for detail and cultural nuance. You’ll evaluate whether outputs are accurate, consistent, and aligned with real-world expectations in German. What You’ll Do • Review AI-generated content in German • Identify message drift (detect output deviation) • Detect hallucinations (fabricated claims, unrealistic visuals, incorrect attributes) • Provide structured feedback that improves model performance over time What We’re Looking For • Native or fluent German speaker • Strong understanding of German language and cultural context • Ability to distinguish subtle differences in tone, quality, and correctness • High attention to detail and consistency in applying guidelines • Bonus: experience in marketing and data annotations • Availability: short-term engagement starting ASAPDeutschsprachige/r Evaluator/inÜber die Rolle Wir suchen freiberufliche, remote arbeitende Deutschsprachige zur Bewertung von KI-generierten Inhalten mit einem ausgeprägten Blick für Details und kulturelle Nuancen. Sie beurteilen, ob Inhalte sinnvoll, konsistent und realitätsnah sind.Aufgaben • Überprüfung von KI-generierten Inhalten auf Deutsch • Identifikation von inhaltlichen Abweichungen • Erkennung von Halluzinationen (falsche Angaben, unrealistische Darstellungen, fehlerhafte Attribute) • Bereitstellung strukturierter Rückmeldungen zur Verbesserung der Modelle Anforderungen • Deutsch als Muttersprache oder fließend • Starkes Sprach- und Kulturverständnis • Fähigkeit, feine Unterschiede in Ton, Qualität und Korrektheit zu erkennen • Hohe Detailgenauigkeit und konsequente Anwendung von Richtlinien • Bonus: Erfahrung in Marketing oder Datenannotation • Verfügbarkeit: kurzfristiges Projekt, sofortiger Start